Replace Standard linter

[TimonVS]

While I think Standard is a great tool, I feel it doesn't add much value to include it in the default template. It's very strict and sometimes incompatible with Prettier (which I think more people are using nowadays?) and can therefore be quite annoying, and it hasn't been set-up to show errors in the editor. In the TypeScript template it's also causing issues (probot/template-typescript#5) which I don't exactly know how to solve. It could be nice to "replace" Standard with just ESLint/TSLint with a config for Prettier?